Mary can read 20 pages in 30 minutes. How long would it take her to read 160 page book? Write your answer in hours and minutes .
I am not sure what formula do j use
She reads 20 pages in 1/2 hour -- so she read 40 pages in 1 hour.
160 / 40 = 4 hours
so I don't know I just need the answer please !
Corn
But p in corn
How do you think this problem can be solved?
Mary can read 4 pages in 15 minutes.At the same rate, how many pages can she read in 45 minutes?
To determine how long it would take Mary to read a 160-page book, we need to find the ratio between the number of pages she can read in a given time frame.
First, let's determine the number of pages Mary can read per minute. We can do this by dividing the number of pages she can read in 30 minutes (20 pages) by the number of minutes (30). This gives us the reading speed of Mary, which is 2/3 pages per minute.
Next, we need to calculate the time it would take for Mary to read the entire 160-page book. To do this, we divide the total number of pages (160) by the reading speed (2/3 pages per minute):
160 pages / (2/3 pages per minute) = 240 minutes
Since we are asked to express the answer in hours and minutes, we divide the total minutes by 60 to convert it into hours:
240 minutes / 60 = 4 hours
Therefore, it would take Mary 4 hours to read the 160-page book.